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Spring Energized PTFE-Seals
The GFD spring energized PTFE seal is the newest generation of spring actuated Teflon seals. These seals consist of a special precision jacket/lip made of Teflon (or other high performance polymers) and a corrosion resistant stainless steel spring.
In this combination, the spring is forcing the seal lips against the gland and the rod walls. The pressure assists the spring force.
The spring compensates the lip wear, hardware tolerances, eccentricities and provides permanent resilience to the seal lips. The GFD design with sealing lip and spring arrangement guarantees more leakage protection than conventional lip seals.
More than 50 different PTFE compounds (and other high performance polymers) are available or can be composed for jacket fabrication within a very short time.
The standard designs cover radial and axial seals for dynamic as well as static applications.
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OmniSeal® seals are high performance spring energized PTFE seals. These are capable of handling extreme service conditions and are used in a variety of applications, such on high temperature / high pressure (HTHP) Ball Valves, rocket and jet engines, robotics, racing cars, oil and gas applications and others.
>Temperature: -260°C to +300°C.
>Pressure: Vacuum to 10,000 bar.
>Surface speeds: 40m/s.
>Low and controlled friction, low wear.
>Broad chemical compatibility.
>High pressure and temperature combinations.
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Spring-energized seals made of PTFE are used for sealing reciprocating pistons and rods as well as rotary and swiveling applications.
Highlights
outstanding chemical resistance against aggressive media
suitable for high temperature ranges between –95°C and +300°C
suitable for media pressures up to 700 bar
Typical Applications
needle seals in painting lines
metering devices
valve seals in bottling lines
automotive and aerospace applications
medical technology/endoscopy
solenoid valves
measuring technology/HPLC-technology
general industrial machinery
chemical equipment
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Features:
- Teflon® compounds with almost universal chemical compatibility
- Stainless steel springs for corrosion resistance
- Wide temperature range - 400ºF to +600ºF
- Static and dynamic applications
- Vacuum to 60,000 psi
- Can run dry or lubricated
- Low friction seals
- Sizes up to 60" diameter
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Bal Seal Engineering canted-coil springs produce a nearly constant force over the working spring deflection unlike other types of springs where the spring force is directly proportional to deflection. Our products are available in continuous lengths or circular spring form with outside diameters from 0.020" (0.51mm) and wire sizes as small as 0.0025" (0.64mm). Spring forces are determined by material, coil size, and geometry. Bal Seal Springs are be custom engineered to meet your application requirements.
Bal Seal can accommodate high volume production requirements while meeting today's exacting quality standards.
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The MSE® seal consists of a PTFE or other polymer energized by a corrosion-resistant metal spring. When the seal is seated in the gland, the spring is under compression and applying force on the gland-sealing surfaces. This creates a tight barrier to prevent gas or fluids from leaking. The spring also provides resiliency to compensate for seal wear, gland misalignment or eccentricity. While spring force provides adequate force for sealing at low pressure, at high pressure the system pressure augments the spring force to provide an even tighter seal. MSE seals are precision machined from PTFE, filled PTFE and other high-performance polymers. MSE seals work consistently under a wide array of temperatures and pressures. Greene, Tweed offers over 100 jacket materials, four standard spring materials, and four standard spring designs to meet your sealing needs.
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